Develop Office 2010 - 2000 extensions
in Visual Studio: C#, VB.NET, C++

Add-in Express™
for Microsoft® Office and .net

Add-in Express for .net features and benefits

Microsoft Office extensibility

Add-in Express is completely based on the Office extensibility technology and extends it with unique features, which makes your Office development fast, easy and effective. You can develop all kinds of Office extensions including COM add-ins, smart tags, Excel RTD servers, Automation add-ins and XLLs. Learn more...

Version-neutrality and edition independence

Add-in Express provides you with version-neutral run-time, so you needn't write code for each Office version. Your write your code once, and it runs on all Office versions, from 2000 to 2010. In addition, your solutions are fully compatible with all Office editions, from Student and Home to Enterprise and Ultimate. Learn more...

Effective project architecture

Add-in Express generates ready-to-use solution templates based on our long-term experience in development and deployment of Office solutions. The Add-in Express architecture makes your Office solutions secure, isolated, managed, deployable and updatable with your minimal efforts. Learn more...

Visual designers instead of coding

You use visual designers to customize Office menus, toolbars, ribbons, task panes, forms, windows, regions, option and property pages, etc. Add-in Express gives you the True RAD way, so you use components and visual designers instead of routine writing of glue code. Learn more...

Outlook is the premium platform

Outlook developers benefit from a plenty of Outlook-related features. Using Add-in Express components and their visual designers you can make your Outlook menus, toolbars, ribbons or certain controls context sensitive, bind them to specified folders or content types, build option and folder property pages, add navigation pane shortcuts, embed view and form regions and more. Learn more...

1st-class GUI with Advanced Outlook Regions

Add-in Express gives you the Advanced Outlook Regions that are shared (you can place several forms from several add-ins into one region), version-neutral (your regions work on Office 2000 as well as on Office 2007 and 2010), flexible (you can add regions for Outlook views, forms, To-Do bar, Navigation and Reading panes). Finally, you can create, close and move your regions at run-time. Learn more...

Any .NET controls on Office toolbars

On all versions of Outlook, Word, Excel and PowerPoint, you can place any built-in or third-party controls on Office toolbars. So, your own Toolbars can contain grids, tree views, list views, user controls, forms, etc. With Add-in Express you build a feature-rich GUI that will definitely be liked by your end-users. Learn more...

Improved Excel extensions

If Excel is your target application, with Add-in Express you can create amazing Excel add-ins with the Advanced Office Task Panes that work for all Excel versions, effective real-time data servers with any number of RTD topics, new user-defined worksheet functions (UDFs) through Automation add-ins or XLLs. Learn more...

Deployment made easy

With Add-in Express the deployment of your Office projects becomes so easy that you will forget about it. Each Add-in Express solution contains a setup project with all necessary prerequisites. Plus, your solutions fully support ClickOnce, so just build and publish your solution once, deploy and update anywhere. Learn more...

True RAD - you write applied code only

Add-in Express for .net is completely based on the Rapid Application Development (True RAD) paradigm and allows you to reduce the time you used to spend on COM add-in, smart tag and RTD server development at least by half. You write applied code only, Add-in Express does everything else. Learn more...